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On-line evaluation of a round rotor synchronous machine parameter set estimated from standstill time-domain data

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3 Author(s)
S. Horning ; Dept. of Electr. Eng., Ohio State Univ., Columbus, OH, USA ; A. Keyhani ; I. Kamwa

This paper presents a method for identifying the best linear circuit model parameters of a three-phase, round rotor synchronous machine. Standstill time-domain test data and the maximum likelihood estimator are used to identify the values for the equivalent circuit models. The estimated models are validated against standstill data and an online test. A steady-state error adjustment procedure is introduced and the results are analyzed. The final dand q-axis model selections are based on the minimization of the cost function, the concept of parsimony and how well the models predict the online dynamics of the machine. Issues related to the necessity of the Lfld differential leakage inductance and the necessity of the Zfe eddy current branch are also discussed

Published in:

IEEE Transactions on Energy Conversion  (Volume:12 ,  Issue: 4 )